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Analysis
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max time kernel
119s -
max time network
117s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
30/11/2024, 20:47
Behavioral task
behavioral1
Sample
fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8aN.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8aN.exe
Resource
win10v2004-20241007-en
General
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Target
fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8aN.exe
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Size
23KB
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MD5
6e6d2f25fe0c0749d169b526d5b04d30
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SHA1
bdb9d5b480392c48974daede2d860c0e3f6f5bc8
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SHA256
fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8a
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SHA512
701e0513483e6c08d9f99e5d71d0dac60bbb76a8cee4164f1a3fceb3c6d05f97c68e05e81c8f5c33a9e401dc7dc6ccf25bc0761fc235a13e06bc15cc827c7138
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SSDEEP
384:poWtkEwn65rgjAsGipk55D16xgXakhbZD0mRvR6JZlbw8hqIusZzZI7:+7O89p2rRpcnuF
Malware Config
Signatures
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Njrat family
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 628 netsh.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8aN.exe -
Executes dropped EXE 1 IoCs
pid Process 1756 server.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\7657c14284185fbd3fb108b43c7467ba = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .." server.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe -
System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8aN.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language server.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe -
Suspicious use of AdjustPrivilegeToken 27 IoCs
description pid Process Token: SeDebugPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe Token: 33 1756 server.exe Token: SeIncBasePriorityPrivilege 1756 server.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1188 wrote to memory of 1756 1188 fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8aN.exe 84 PID 1188 wrote to memory of 1756 1188 fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8aN.exe 84 PID 1188 wrote to memory of 1756 1188 fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8aN.exe 84 PID 1756 wrote to memory of 628 1756 server.exe 87 PID 1756 wrote to memory of 628 1756 server.exe 87 PID 1756 wrote to memory of 628 1756 server.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8aN.exe"C:\Users\Admin\AppData\Local\Temp\fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8aN.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1188 -
C:\Users\Admin\AppData\Local\Temp\server.exe"C:\Users\Admin\AppData\Local\Temp\server.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1756 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:628
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
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Downloads
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Filesize
23KB
MD56e6d2f25fe0c0749d169b526d5b04d30
SHA1bdb9d5b480392c48974daede2d860c0e3f6f5bc8
SHA256fe42a97a272f23621e6589b4c003922a3bbffdc7288b50517e6045cee3db9e8a
SHA512701e0513483e6c08d9f99e5d71d0dac60bbb76a8cee4164f1a3fceb3c6d05f97c68e05e81c8f5c33a9e401dc7dc6ccf25bc0761fc235a13e06bc15cc827c7138